Milton has hair in the archival footage. Huh._________________"Worse comes to worst, my people come first, but my tribe lives on every country on earth. Iíll do anything to protect them from hurt, the human race is what I serve." - Baba Brinkman

I think it's backstory, showing how he got to where he is now: In the past, Milton felt a sense of empathy and loss to the bot creatures, but he was told to not get too attached to them, and apparently he followed that advice... but perhaps that spark of empathy is still there and could get fanned back into a flame?

Well, it's certainly not gone away entirely. Remember him attacking Jesus for the destruction, albeit accidental of one of his drones, his empathy with Xanthe over the loss of her bike and he's currently torturing himself over Hunterbot's destruction._________________I aim to misbehave